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Active stylus to host data transmitting method

  • US 9,619,051 B2
  • Filed: 07/16/2014
  • Issued: 04/11/2017
  • Est. Priority Date: 08/19/2011
  • Status: Active Grant
First Claim
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1. A method comprising:

  • at a stylus configured to capacitively couple to a capacitive sense array associated with a host device, wherein the capacitive sense array includes a plurality of electrodes;

    receiving an indication that the host device is performing a set of coordinate measurement operations to determine a coordinate of the stylus proximate to the capacitive sense array, wherein the set of coordinate measurement operations comprises a first measurement operation of a first set of electrodes of the capacitive sense array and a second measurement operation of a second set of electrodes of the capacitive sense array; and

    in response to receiving the indication, transmitting a data packet of stylus data from the stylus to the capacitive sense array associated with the host device while the host device is performing the set of coordinate measurement operations on the plurality of electrodes of the capacitive sense array, including;

    transmitting a first bit of the data packet during the first measurement operation; and

    transmitting a second bit of the data packet during the second measurement operation.

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